One interesting storyline could be Lex Luthor secretly funding a group of meta - humans to create chaos and then swoop in as a'savior' to gain public favor. This would play into his manipulative nature.
Clark and Lex were friends at the beginning in the comics. But as the story progressed, Lex's character changed, and they became enemies. This transformation was driven by Lex's mistrust and his own ambitions.
Yes, in some storylines, Lex and Superman can be portrayed as having a complex relationship that might involve moments of friendship or uneasy alliances.
Lex Luthor's age isn't fixed in the comics. It can change based on the creative direction of the writers and the era of the story. Generally, he's portrayed as an adult in his prime, often in his late 30s to 50s.
In Japanese anime, the maid usually provided housework and service to the young master, while the young master could enjoy some privileges such as free food and a comfortable living environment. This kind of plot usually involved the emotional entanglement between the characters, such as the romantic relationship between the maid and the young master or the friendship between the young master and the maid. This kind of plot often aroused the interest of the readers and they thought about how to balance the power and relationship between the characters.
There are many alternatives. For example, you can explore fanfiction that focuses on their friendship, such as stories about how they team up to face a common enemy in the story's universe. Another alternative could be stories about their intellectual rivalries, highlighting their different outlooks and strategies.